Photographic silver halide elements containing aryl hydrazides

Details Photographic silver halide elements containing aryl hydrazides Photographic silver halide elements containing aryl hydrazides

1989-08-14

1990-06-26

Martin, Roland E.

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430441, 430442, 430598, G03C 110

Patent

active

049371606

ABSTRACT:
Photographic silver halide elements containing aryl hydrazides as defined for the production of images with ultrahigh contrast and a new class of aryl hydrazides with a cationic group in the aryl radical as defined. The photographic silver halide elements can be developed at relatively low pH values and have low fog and low tendency to form black spots in unexposed or slightly exposed areas.

REFERENCES:
patent: 3386831 (1968-06-01), Honig et al.
patent: 4224401 (1980-09-01), Takada et al.
Katritzky, Alan R., et al., Chemical Abstracts, vol. 99:158195w (1983).
Research Disclosure 23510, Anonymous, Nov. 1983.

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